I had this annoying pain in my chest yesterday. All day. It rises up my left arm and back and also sometimes in the neck region. It felt like too many needles poking me at once at these place. My hands started to shake and I had a glass of glucon-D with lemon. All day I was feeling anxious and was overthinking some things. I fasted the whole day, with only lunch as the one meal. could that be the reason? Also I used to have a swelling in my heart valve. Could it mean something? I'm too stressed.